Boiler-washing system



Jan. 16 W23.

3. OTIS. B01 LER WASHING SYSTEM.

2 SHEETS-SHEET I Fl-LED Nov. 19. 1920.

Patented lien. 16, 1923.

SPENCER OTIS, OF CHICAGO, ILLINOIS.

BOILER-WASHING SYSTEM.

Application filed November 19, 1920. Serial No. 425,059.

1 '0 all whom it may concewt Be it known that I, SrnNonn O'rIs, a eiti- Zen of the United States, residing at Chicage, in the county of Cook and State of 5 Illinois, have invented certain new and useful Improvements in Boiler-Washing Systems, of which the following is a specification.

This invention relates to systems for washing out and refilling boilers, for instance, locomotive boilers, and is designed primarily for the washout portion of such a system, although some of its features are applicable as well to the refilling part thereof.

In my application Serial No. 321,274, I have described and claimed a system of hot water distribution, in which water is circulated from a storage receptacle through a system of pipes which constantly direct it to and past a place where it is accessible for use (in the illustrated instance, use by eon snmption of the water in heated state for refilling of boiler), and the circulation being continued, when not being drawn upon, so as to keep up the flow in the pipe and back to the storage receptacle, and insure presence of hot water at the service outlets at all times besides protecting the line against injury from freezing in extreme weather; the water returned to the receptacle being re-condi tioned while yet outside of the receptacle, or just before its discharge thereinto; and selfcontrolled means for determining the degree of reconditioning being provided and m ade dependent upon the temperature of the returned water or heatloss incident to its circnlation, so that it, entered the receptacle at A suitable temperature for re-admision to the circulating line.

One object of the present invention is to organize such a self conditioning water circulating system as a temperature reducing means so that it may be employed with advantage in combination with the washout portion of a boiler washing system as av means for tempering the washout water and economizing in the quantity of fresh water required to be mixed wi blown off water stored in thewashouttank to renderit safe for use through the boiler washing hose. One feature of the present invention con sists, accordingly, in combining such a circulatory system and conditioning apparatus with the washout tank of a boiler washing system, and collateral features incident to the preferred embodiment thereof consists in having the thermostatic control of the conditioning apparatus subject to temperatures of the storage tank after accretion of the returning water, so that the tank temperatures rather than returning water temperatures will be regulated; also in havingnot only means for making up excessive temperature losses on the circulating line, but for determining whether the returning water goes back to the storage tank or is delivered to waste, and having this determination depend upon the quantity of water already in the storage tank, so that if the storage tank has been charged to its full capacitv bv additional blown oil water, the returning water will automatically pass to sewer. L

Another object of the present invention is to adapt the self conditioning circulatory system to serve not only as a means for cutting down the temperature of washout water. but as a means for heating the atmosphere of the roundhouse or other place of operation in which the system is installed; in other words, increasing the etliciency of heat dissipation and at the same time servmg the useful purpose with the heat so radiated. Another feature of the invention accordingly consists in introducing into the circulating line, either directly or in shunt through the pipes thereof, suitable radiators forming parts of the circuit of circulation; collateral features to this part of the inven tion consisting in combiningwith the circulating system boosters of temperature, and, if desired, also of the waterflow, which will take care of excessive drops in temperature under extreme conditions and give full. capacity to the system as a heating apparatus as well as insuring circulation through the shunt lines; the action of a booster being antomatically controlled by a thermostat which is subject to the temperature effect at or near the point in the pipe circuit which is to be influenced.

The invention will be understood upon reference to the accompanying drawings in which one embodiment is shown by way of illustration, and in which-- Figure l a schematic view showing the layout of a boiler washing system with which the several features of the present in- 'vention are combined.

" Fig. 1 is a detail sectional. view of the diaphragm valves entering into the organination of Fi 1. Figure 21s a deta l sectional view of a valve which -enters into the Figure l. and parts of which to temperature the "washout crossove1gp1pe D to thecondenser E. whence it passes to the filling tank I.

It i iscustomary .in systems of this kind .to :provide pumps such ,as 2, 2 for keeping .up :pressure onthe washoutline3and thefilling lineir with their drops-oi' outletsfi and-3, water flowing throughthe-washout ,line be ing usually at a high atcmperature .in consequence of being-received tromthe=blown oft products 1 of the locomotive. and being; teni- .pered by the thermostatic .action o't' cold water -to bring it down to .a .temperature which will not injuri'ously.aitect the operatives in handlingithe washout hose. Such a system of operation .wastetul ,as .to cold waterronsumed.

The present invention provides special means forreduc-ingthe temperature of water in the washoutitank :1 by radiatinglhe heat therefrom along the line, or shunt piping connected with the line. so :as t0-either reduce LOI render unnecessary the addition of tempering water to the supply maintained indie-washout line 3;.and to-,this.end,-said washout line ziS provided with ithe 'usual return pipe 4;, and .in ,additionto having this returnspipe delivered dii'ect-lyiintothe washout tank .1, for instance through the anedium o't the branch pipe '4. it is also connected through i a .pipe 4:" :with a conditioning. appaatus 5, adapted to iraisethe temperature of the returning water bv the admission of steam through the :branch :6 whenever the temperature of the itank. into which :thereturned water is delivered. falls below a predetermined temperature. :for instance, 140 and said :return pipe is 'further provided with :a lav-pass TVEllVB 7 movetl by steam piston 7 which receives steam pressure from the diaphragm valve 7 in turn icontrolled by 'the :thermostat so that the 'r-eturning water 'will pass directly to the tank through the pipe P when the temperature:i-n'tank 1 is up 'to 140. or pass into said tank indirectly "through pipe P and steam heater 5 whenever rthe darn-para- 'ture falls undesirably. :say, below 120'".

Preferably valve 7 is made in the form of atriple valve .with two valve heads as shown in Figure 2, one of its va'lveheads 7 acting to seat downward and divert water from pipe i or to" seat upward and cut oil access to pipe 4-." while permitting the water of pipe "4- 'to escape downwardly; while the other valvehead 7 may move into a position which permits the return water to flow from pipe l to pipe 45 and directly into tank 1., or.into a-.positi on which will cut oil communication with the tank 1 and permitthe return water to how through waste pipe 4' .into .the overflow pipe .1 of the ,tank 1, according to the height of water in the tank .1. which will exert its control hydrostatica'lly upon the valve head '7 through means .ot' the diaphragm 7 communicating through piipe 7 with the piston 7 which is connectedtosaid valve head.

It is customary to control the :pump ,hythe .load on the line 3 so that when no hot w-ater.isbeingdra-wn from the line for washing out ;purposes there is merely acirculation kept up. through return .pipe l, suflieientto .keep up the temperature of the water at the .outlets, and to this end diaphragm valve 8 ,is suitably connected with the pressure outlet 8 in the pipe 3 beyond .the pulnpQ.

In order to 'culating line various radiating devices-are employed, prel erably in such places as will enable them to serve useful purposes in heating the atmosphere in the roundhouse .oinother work places.,as suggested by the common type of ifiOOl radiator 9. the p11:

radiator 10. and the wall radiators 11 and 12. These radiators areon .the circulating line that is'conneeted'inshunt between the washout line 3.and,the return .pipe 4. as. for instance,.throughthe.medium of branch pipe 13. connect-ineipipes .14, 15. 16. and terminal pipe 17. VViththis means, excessive heat in the-tank Imaybeefimtively dissipated. and at-the same time saved from waste in seasons when .-artificial heat .in work rooms is desirable. by causing the heat to warm up .the atmosphereotsuch rooms.

.In order to makethe heating system effective in extremetemperatures. provision may be made for replacingz excessiveloss of heat by radiation in some of the radiators. for

instancethe radiators 10. and 11, byproviding heat booster 1R in advance of one or =more of the radiators. for instance. radiator 1?...and this'heat booster may be controlled automatically by the tei'nperatnre of water of circulation as it reaches the i'pointrol thebooster. as suggested in Figure 3. by puttinguilnathermostat .18 controlling diaphra m 18 with livesteam pipe branch 1,9. In order that the accretion of steam ;may be under conditions which alsospeed the circulation of rthewater, it may .be delivered into the connecting pipe 16 by means of a increase radiation on the cirnozzle l9 presented in the direction of flow. By the means shown in Figure 3, the temperature of the water as well as the flow of the water in the shunt connected heating line will be insured. This result will also be favored by the proper proportioning of the return pipe at in advance of and subsequent to the tapping in of the terminal pipe 17.

As suggested in Figure 4, the heat booster may be increased in its effectby having, in addition to the nozzle 19 delivering steam under control of thermostat 18 an additional booster 20, thermostat 20, and steam nozzle 21, the thermostat 20 being in position to be responsive to the temperature of water of circulation after the accretion of steam and heat delivered by the nozzle 19. The heat boosters 1.8 and 20 will obviously have their effect upon the temperature of water returning through pipe 4;, and. where they are in operation it may not be necessary to return the water through the conditioning heater 5. Moreover, the necessity for action of tee boosters 18 and 20 should exist only when the temperature is falling below that at which it should reenter the tank 1, and thermostats 18 and 20 may readily be adjusted so that they will put the nozzles 19 and 21 into play only at such times.

Obviously, instead of tapping the terminal pipe 17 into the return pipe i, it could be tapped directly into the washout line 3.

I claim:

1. In a boiler washing system, a washout tank, a washout line, a return pipe having two channels through which it returns water to the washout tank, a temperature conditioning device introduced into one of said channels or" communication, and a temperature controlled valve adapted to connect the return pipe with either of said channels or communication.

2. In a boiler washing system, a washout tank, a. blowoff connection adapted to supply water to said washout tank, a washout line, a return pipe adapted to deliver returned water of circulation to said tank, a waste pipe, a valve adapted to connect the return pipe alternatel with the washout tank and the waste pipe, and means actuated by the height of water in the washout tank for controlling said valve.

3. In boiler washing system, a washout tank, a washout line, a return pipe for reluruing water oi circulation deliver 1i through the washout line, a temperature coi'iditioning device con'imunicating with said tank, a direct delivery pipe communicating with said tank, a waste pipe. and atriple valve hav ing a hydrostatic column control through which it directs water to the waste pipe or to the tank according to the volume of water in the tank and having a temperature control through which it passes water from the re turn pipe to the tank either through the direct communication or through the temperature conditioning device according to the temperature of water in the tank.

4-. In a boiler washing system, a washout tank, a system of circulation for washout water supplied from said tank, and radiators introduced into said system oi circulation through which washout water flows.

In a boiler washing system, a washout tank, a system of circulation for washout water supplied from said tank, including washoutline, a supply outlet for said washout line, and a return line, and a system of water circulation connected in shunt with said first-named system of circulation and including radiators in its circuit.

6. In a boiler washing system, a washout tank, a system of circulation for washout water supplied from said tank, inchuling a washout line, a supply outlet for said washout line, and a return line, and a system of water circulation connected in shunt with said first-named system of circulation and including radiators in its circuit; said shunt system of circulation receiving water from the main washout line and discharging its water of circulation into he return pipe of the system of circulation first named.

7. In a boiler washing system, a water circulating system, means for delivering water therefrom to a boiler at will, and radiators supplied from said circulating systom.

8. In a boiler washing system, a water circulating system, means for delivering water therefrom to a boiler at will, radiators supplied from said circulati system, and means automatically maintaining tempera ture o'li water in the circulating system.

Signed at hicago, llliuois, this l5th day ol' November, 1020. 

